But discrimination against trans individuals has by most measures increased. Bathroom bills, many states categorized gender medicine in minors as child abuse, etc. Polls asking people of they agree that gender can be changed has decreased over time: https://www.pewresearch.org/social-trends/2022/06/28/america...

So whatever is causing trans identification to increase ~250x faster than left-handedness is happening despite increasing discrimination against trans individuals.

These aren't intended to unfairly discriminate against the trans-identified. The purpose is to protect female spaces (which males really have no right to enter), and prevent medical harm to children by doctors with gender identity ideological beliefs.

Actual discrimination would be things like, repealing laws that protect individuals with a trans identity from being refused housing or employment because of that identity (or expression thereof). As far as I know, no-one is pushing any bills that would do this.